author Gijs Kruitbosch <>
Wed, 13 May 2015 22:18:00 +0100
changeset 260491 d5ba1bc97911bc35917c83ce5a92e873af38ec2c
parent 259646 a20c7910a82fa2df2f3398c1108d102bac9128b0
permissions -rw-r--r--
Bug 1164302 - pocket button gets lost after a restart, r=jaws a=dolske

/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* This Source Code Form is subject to the terms of the Mozilla Public
 * License, v. 2.0. If a copy of the MPL was not distributed with this file,
 * You can obtain one at */

#ifndef mozilla_dom_textdecoder_h_
#define mozilla_dom_textdecoder_h_

#include "mozilla/dom/NonRefcountedDOMObject.h"
#include "mozilla/dom/TextDecoderBinding.h"
#include "mozilla/dom/TypedArray.h"
#include "nsIUnicodeDecoder.h"

namespace mozilla {

class ErrorResult;

namespace dom {

class ArrayBufferViewOrArrayBuffer;

class TextDecoder final
  : public NonRefcountedDOMObject
  // The WebIDL constructor.
  static TextDecoder*
  Constructor(const GlobalObject& aGlobal,
              const nsAString& aEncoding,
              const TextDecoderOptions& aOptions,
              ErrorResult& aRv)
    nsAutoPtr<TextDecoder> txtDecoder(new TextDecoder());
    txtDecoder->Init(aEncoding, aOptions.mFatal, aRv);
    if (aRv.Failed()) {
      return nullptr;
    return txtDecoder.forget();

    : mFatal(false)


  bool WrapObject(JSContext* aCx, JS::MutableHandle<JSObject*> aReflector)
    return TextDecoderBinding::Wrap(aCx, this, aReflector);

   * Validates provided label and throws an exception if invalid label.
   * @param aLabel       The encoding label (case insensitive) provided.
   * @param aFatal       indicates whether to throw an 'EncodingError'
   *                     exception or not when decoding.
   * @return aRv         EncodingError exception else null.
  void Init(const nsAString& aLabel, const bool aFatal, ErrorResult& aRv);

   * Performs initialization with a Gecko-canonical encoding name (as opposed
   * to a label.)
   * @param aEncoding    A Gecko-canonical encoding name
   * @param aFatal       indicates whether to throw an 'EncodingError'
   *                     exception or not when decoding.
  void InitWithEncoding(const nsACString& aEncoding, const bool aFatal);

   * Return the encoding name.
   * @param aEncoding, current encoding.
  void GetEncoding(nsAString& aEncoding);

   * Decodes incoming byte stream of characters in charset indicated by
   * encoding.
   * The encoding algorithm state is reset if aOptions.mStream is not set.
   * If the fatal flag is set then a decoding error will throw EncodingError.
   * Else the decoder will return a decoded string with replacement
   * character(s) for unidentified character(s).
   * @param      aView, incoming byte stream of characters to be decoded to
   *                    to UTF-16 code points.
   * @param      aOptions, indicates if streaming or not.
   * @param      aOutDecodedString, decoded string of UTF-16 code points.
   * @param      aRv, error result.
  void Decode(const char* aInput, const int32_t aLength,
              const bool aStream, nsAString& aOutDecodedString,
              ErrorResult& aRv);

  void Decode(const Optional<ArrayBufferViewOrArrayBuffer>& aBuffer,
              const TextDecodeOptions& aOptions,
              nsAString& aOutDecodedString,
              ErrorResult& aRv);

  bool Fatal() const {
    return mFatal;

  nsCString mEncoding;
  nsCOMPtr<nsIUnicodeDecoder> mDecoder;
  bool mFatal;

} // dom
} // mozilla

#endif // mozilla_dom_textdecoder_h_